A neighbour told the Herald a man who lived at the property was dragged from the home by a woman and a man, and he was seen lying on the ground outside. The two people who dragged him outside were then treated by ambulance staff.
He said the man had lived at the property for at least three years but was "generally a loner". He had not seen the other two people before.
Surrounding neighbours came to have a look and check that "everyone was okay", he said. The complex of around 20 flats "is a little community" he told the Herald.
He said there had been no previous issues in the area.